Electronic and magnetic properties of the (Co, Cu)-doped ZnO have been studied.
Calculations are based on density functional theory within GGA and GGA+U formalisms.
Room temperature ferromagnetism in Cu0.042Zn0.958O is suppressed when it is doped with Co (4%).
Local magnetic moment of 3d-Cu in Cu0.042Zn0.958O is suppressed when it is doped with Co (4%).
Results are in good agreement with the experimental observations.